How's the air quality? Is it at least below unknown records?
(i drew this comic when the air quality was so bad the local expert's vibes were like "leave if you can; if you don't you'll uh.... well honestly we don't know what will happen to you, but it probably won't be good."
In my case I'm just posting a lot to already-created communities found in the Lemmy directory that've got a chunk of subscribers.
If you're going to start your own community for your own interest, I'd advise at least setting up on an already-populated Lemmy server (which you would have to be registered on) so it gets listed in the local directory.
If you're going to host the Lemmy server and your community, I have no experience on that front/I would imagine there's a lot of SEO and self-promotion you'd have to do to get it off the ground.